Improvement in tool for splitting whalebone



etnica sans f JAMES A. SEVRY, OF BOSTON, MASSACHUSETTS.

Letters Patent No. 91,047, dated June 8, 1869.

IMPROVEMENT IN TOOL FOR SPLITTING-vWI-IALEBONE.

` The Scheduleh referred to in these Letters Patent and making part of the same.

To all persons to whom these presents may come:

Be it known that I, J AMES A. SEVEY, of Boston, of the county of Suffolk, and State of Massachusetts, have invented a new and useful Machine' for Stripping Whalebone.; and do `hereby declare the saine to be.

fully described in thefollowng specification, and represented in the accompanying drawings, of which- Figure l is a perspective View;

Figure 2, a side elevation; and

vFigure 3, a transverse section of it.

In the drawings- F denotes a cutter-stock, provided with two handles, H H, projecting from it in opposite directions.

. It also has a groove, H', extending through it, lin manner as represented.

Across thelower part of the groove` a knife, A, is carried, the said knife being arranged in two metallic cylinders, C C, or being held, at or near each of its ends, between and by segments of cylinders.

The said cylinders' or cylindrical segments, as the case may be, are arranged in the tubular heads a a of two clamp-screws, U U, which go through the stock, and have nuts, b b, screwed on them, the whole being as represented, and for the purpose of fixing the knife to the stock and allowing such knife to ybe revolved and set to any desirable inclination relatively to the lower surface of the stock.

'There extends through the groove H a bow-spring, B, whose ends are joined, by-.sorews and nuts, S S, to another such spring, D, which at or near its middle is fastened by a screw, T, in a slot' or recess made in a standard, V, elevated on lone of the handles, H, and y projecting over the stock, in manner as shown in the drawings. f

A screw, E, is screwed down through the stock F, and against the upper surface of the bowespring B.

By means of such screw, the said spring may be pressed down toward the knife, more or less, as 'the thickness of the piece to be riven from a slab-may require, the elastic force of the two springs serving to elevate the lower one while the screw E may be in the act of being turned backward.

The mode of using the implement will be readily understood by workers in whalebone. ,It consists simply in applying the machine to a piece of whalebone so that it may enter the space H and be `brought againstthe cutting-edge of the knife A, the spring B resting ou the upper surface of the whalebone. After which (the said piece of whalebone being properly sup-` ported and held against thedraught of the machine) the said machine is to be drawn by its handles through the piece, so as to remove'from it a strip of the requisite thickness. Y

I claim the arrangement and combination of the springs B D, and the screw E, with the stock E and the knife A. y

I also claim the combination of the rotary bearings O C, and their sockets, a a, with the knife and its clamp-screws applied to the stock F, and to operate with the springs B D, the whole being as set forth.

JAMES A. SEVEY.

Witnesses:

R. H. EDDY, F. P. HALE, Jr. 

